David Schwartz, CTO of Ripple, said that zero-knowledge proofs (ZK Proofs) could bring major changes to the blockchain industry, especially when integrated with XRP Ledger (XRPL). He proposed the concept of a "privacy ledger" that maintains decentralization while protecting privacy. Although the actual application is still unclear, he believes that meaningful use cases are coming, and ZK technology is expected to play a key role in XRPL expansion and financial innovation in the future.